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Alenkinab [10]
3 years ago
12

. Question 1.1. What is the first step in solving x2 + 2x + 3 = 0 by completing the square?. (Points : 1). Factor the left side.

. . Add 1 to each side of the equation.. . Divide both sides of the equation by 2.. . Subtract 3 from each side of the equation..
Mathematics
2 answers:
Assoli18 [71]3 years ago
6 0
U r going to subtract 3 from each side of the equation....leaving you with :
x^2 + 2x = -3
Arturiano [62]3 years ago
6 0
The first step to solving an equaiton of the form<span>ax2+bx+c = 0</span>is by completing the square by first dividing by a, giving<span>x2+bx/a+c/a = 0 
then subtract c/a to both sides.

</span>In this regard, the first step to the equation is to C. <span>. Subtract 3 from each side of the equation..</span>
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. The sandwich shop offers 8 different sandwiches. Jamey likes them all equally. He picks one randomly each day for lunch. Durin
Margarita [4]

Answer:

Step-by-step explanation:

From the given information:

A sandwich shop offers eight types of sandwiches, and Jamey likes all of them equally.

The probability that Jamey picks any one of them is 1/8

Suppose

X represents the number of times he chooses salami

Y represents the number of times he chooses falafel

Z represents the number of times he chooses veggie

Then  X+Y+Z ≤ 5 and;

5-X-Y-Z represents the no. of time he chooses the remaining

8 - 3 = 5 sandwiches

However, the objective is to determine the P[X=x,Y=y,Z=z] such that 0≤x,y,z≤5

So, since he chooses x no. of salami sandwiches with probability (1/8)x

and y number of falafel with probability (1/8)y

and for z (1/8)z

Therefore, the remaining sandwiches are chosen with probability \dfrac{5}{8} (5-x-y-z)

So. these x days, y days and z days can be arranged within five days in

= \dfrac{5!}{x!y!z!(5-x-y-z)!}

Thus;

P[X=x,Y=y,Z=z]=  \dfrac{5!}{x!y!z!(5-x-y-z)}  \times \dfrac{1}{8}x*\dfrac{1}{8}y* \dfrac{1}{8}z* \dfrac{5}{8}(5-x-y-z)

since 0 ≤ x, y, z ≤ 5 and x + y + z ≤ 5.

The distribution is said to be Multinomial distribution.

5 0
3 years ago
6) Determine the dimensions of a rectangle if:<br><br> A = x2 – 19x – 90
Sunny_sXe [5.5K]

Answer:

Step-by-step explanation:

Determine the dimensions of a rectangle if:

A = x2 – 19x – 90

4 0
3 years ago
What is 1 8th divided by 2
KIM [24]
That correct answer is 0.0625
4 0
3 years ago
Read 2 more answers
8. Solve.
trapecia [35]

Answer:

48 assistants

Step-by-step explanation:

If 1 executive has an average of 1.5 assistants, let x represent the number of assistants that are employed if there are 32 executives in the office.

Thus:

1.5 assistants to 1 executive = x assistants to 32 executives

1.5 : 1 = x : 32

\frac{1.5}{1} = \frac{x}{32}

Cross multiply

1.5*32 = x*1

48 = x

Therefore, 48 assistants were employed in the office.

3 0
3 years ago
Please help with this my sister needs help and I forgot how to do this
marishachu [46]

(2 x 100,000) + (7 x 10,000) + (9 x 100) + (5 x 10) = 270,950

4 0
3 years ago
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